Elevate Science Topic 3 Energy

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What is potential energy?

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Potential energy is the stored energy in an object due to its position or state. For example, a book on the edge of a desk has potential energy because it can fall.

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What is kinetic energy?

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Kinetic energy is the energy of motion. An object that is moving, like a rolling ball, has kinetic energy.

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How does potential energy transform into kinetic energy?

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Potential energy transforms into kinetic energy when an object moves. For example, when a book falls off a desk, its potential energy converts to kinetic energy as it falls.

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What is an example of stored energy changing to energy of motion?

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An example is when a person drops a coin from their hand; the stored energy in the coin changes to kinetic energy as it falls.

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What is mechanical energy?

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Mechanical energy is the sum of potential energy and kinetic energy in an object. It is the energy associated with the motion and position of an object.

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What is solar energy?

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Solar energy is energy from the sun that can be harnessed using solar panels or windows to provide light and heat.

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What is an example of using mechanical energy?

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Using a toothbrush to clean your teeth is an example of mechanical energy, as it involves movement.

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What do most objects that give off light also give off?

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Most objects that give off light also give off heat.

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What is the role of windows in harnessing solar energy?

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Windows allow sunlight to enter a building, which can help brighten the space and reduce the need for artificial lighting.

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What happens to energy when a book falls off a desk?

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When a book falls off a desk, its potential energy is converted into kinetic energy as it moves downward.

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